48912772989 has 4 divisors (see below), whose sum is σ = 65217030656. Its totient is φ = 32608515324.

The previous prime is 48912772943. The next prime is 48912773069. The reversal of 48912772989 is 98927721984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 48912772989 - 2¹⁶ = 48912707453 is a prime.

It is a super-2 number, since 2×48912772989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48912772939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8152128829 + ... + 8152128834.

It is an arithmetic number, because the mean of its divisors is an integer number (16304257664).

Almost surely, 2^48912772989 is an apocalyptic number.

It is an amenable number.

48912772989 is a deficient number, since it is larger than the sum of its proper divisors (16304257667).

48912772989 is a wasteful number, since it uses less digits than its factorization.

48912772989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16304257666.

The product of its digits is 36578304, while the sum is 66.

The spelling of 48912772989 in words is "forty-eight billion, nine hundred twelve million, seven hundred seventy-two thousand, nine hundred eighty-nine".